PT1509988E - Rotary permanent magnet electric motor having stator pole shoes of varying dimensions - Google Patents
Rotary permanent magnet electric motor having stator pole shoes of varying dimensions Download PDFInfo
- Publication number
- PT1509988E PT1509988E PT03719435T PT03719435T PT1509988E PT 1509988 E PT1509988 E PT 1509988E PT 03719435 T PT03719435 T PT 03719435T PT 03719435 T PT03719435 T PT 03719435T PT 1509988 E PT1509988 E PT 1509988E
- Authority
- PT
- Portugal
- Prior art keywords
- pole
- permanent magnet
- pole shoes
- shoes
- air gap
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/141—Stator cores with salient poles consisting of C-shaped cores
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2786—Outer rotors
- H02K1/2787—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/2789—Outer rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2791—Surface mounted magnets; Inset magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K21/00—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets
- H02K21/12—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets
- H02K21/22—Synchronous motors having permanent magnets; Synchronous generators having permanent magnets with stationary armatures and rotating magnets with magnets rotating around the armatures, e.g. flywheel magnetos
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K29/00—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices
- H02K29/03—Motors or generators having non-mechanical commutating devices, e.g. discharge tubes or semiconductor devices with a magnetic circuit specially adapted for avoiding torque ripples or self-starting problems
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/12—Transversal flux machines
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2201/00—Specific aspects not provided for in the other groups of this subclass relating to the magnetic circuits
- H02K2201/15—Sectional machines
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Permanent Magnet Type Synchronous Machine (AREA)
- Dc Machiner (AREA)
- Reciprocating, Oscillating Or Vibrating Motors (AREA)
- Reciprocating Pumps (AREA)
Abstract
Rotary permanent magnet motors have salient stator poles with nonuniform pole thickness in the radial direction for compensating effects of cogging torque. Pole base portions terminate at pole shoes at the radial air gap. The pole shoes extend in the circumferential direction from the bulkier base portions. Variation of the thickness of the pole shoe changes the concentration of the effective flux at the point of coupling between the stator poles and the permanent magnet pole shoes. As there is no change in the active interfacing area of the pole shoes a uniform air gap is maintained. The torque signature for each stator pole/rotor permanent magnet interface can be selectively changed to smooth motor operation by configuring the stator pole shoe thickness to vary along its circumferential extent as appropriate. Pole shoes may have tapered leading or trailing edges with respect to a pole base to change the effective flux density in the air gap at a specific pitch of rotation. Additionally, the pole shoe may be shifted off center with respect to the pole base.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/160,254 US6727629B1 (en) | 2002-06-04 | 2002-06-04 | Rotary electric motor having a plurality of shifted stator poles and/or rotor poles |
US10/160,257 US6717323B1 (en) | 2002-06-04 | 2002-06-04 | Rotary electric motor having a plurality of skewed stator poles and/or rotor poles |
US10/207,847 US6822368B2 (en) | 2002-06-04 | 2002-07-31 | Rotary permanent magnet electric motor having stator pole shoes of varying dimensions |
Publications (1)
Publication Number | Publication Date |
---|---|
PT1509988E true PT1509988E (en) | 2009-05-14 |
Family
ID=33568467
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PT03719435T PT1509988E (en) | 2002-06-04 | 2003-03-28 | Rotary permanent magnet electric motor having stator pole shoes of varying dimensions |
Country Status (15)
Country | Link |
---|---|
US (1) | US6822368B2 (en) |
EP (1) | EP1509988B1 (en) |
JP (1) | JP2005528878A (en) |
KR (1) | KR20050004289A (en) |
CN (1) | CN100583602C (en) |
AT (1) | ATE424057T1 (en) |
AU (1) | AU2003223319A1 (en) |
BR (1) | BR0311549A (en) |
CA (1) | CA2483625C (en) |
DE (1) | DE60326342D1 (en) |
DK (1) | DK1509988T3 (en) |
ES (1) | ES2322450T3 (en) |
MX (1) | MXPA04012138A (en) |
PT (1) | PT1509988E (en) |
WO (1) | WO2003105317A1 (en) |
Families Citing this family (29)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050067913A1 (en) * | 2003-09-30 | 2005-03-31 | Valeo Electrical Systems, Inc. | Reduction of cogging torque in electric motors |
JP2005269693A (en) * | 2004-03-16 | 2005-09-29 | Mitsubishi Electric Corp | Permanent magnet motor |
DE102006039090A1 (en) * | 2006-08-19 | 2008-02-21 | Khs Ag | Drive for rotary machines |
WO2008023779A2 (en) * | 2006-08-21 | 2008-02-28 | Seiko Epson Corporation | Single-phase brushless motor |
US8131413B2 (en) * | 2007-09-25 | 2012-03-06 | Max Power Motors, Llc | Electric motor and conversion system for manually powered vehicles |
EP2215711A4 (en) * | 2007-10-29 | 2011-02-16 | Daniel Farb | Rotational magnetic propulsion motors |
JP4901839B2 (en) * | 2008-11-04 | 2012-03-21 | 三菱電機株式会社 | Electric motor, compressor, blower and ventilation fan |
GB2468297B (en) * | 2009-03-03 | 2014-11-19 | Dyson Technology Ltd | Electric machine with an asymmetric stator core |
JP4818401B2 (en) * | 2009-06-16 | 2011-11-16 | 本田技研工業株式会社 | motor |
ATE547833T1 (en) | 2009-05-21 | 2012-03-15 | Honda Motor Co Ltd | ENGINE |
DE102009048116A1 (en) | 2009-10-02 | 2011-04-07 | Brose Fahrzeugteile GmbH & Co. Kommanditgesellschaft, Würzburg | Brushless synchronous motor |
DE102009057446B4 (en) * | 2009-12-08 | 2013-11-14 | L-3 Communications Magnet-Motor Gmbh | Electric machine |
JP5462011B2 (en) * | 2010-01-28 | 2014-04-02 | 株式会社日立産機システム | Permanent magnet type rotating electric machine and compressor using the same |
ES2400462T3 (en) * | 2010-03-18 | 2013-04-10 | Askoll Holding S.R.L. | Motor and fan assembly for condensation clothes dryer and condensation clothes dryer containing said set |
US20120104879A1 (en) * | 2010-11-03 | 2012-05-03 | Krishnan Ramu | Noise reduction structures for electrical machines |
KR20140018869A (en) * | 2011-01-11 | 2014-02-13 | 큐엠 파워, 인크. | Magnetically isolated phase interior permanent magnet electrical rotating machine |
US8847460B2 (en) | 2011-05-09 | 2014-09-30 | GM Global Technology Operations LLC | Asymmetric stator teeth in an electric motor |
JP2013106496A (en) * | 2011-11-16 | 2013-05-30 | Suzuki Motor Corp | Electric rotary machine |
US9577500B2 (en) | 2012-03-04 | 2017-02-21 | Jeremy Hawran | Rotary continuous permanent magnet motor |
US10476323B2 (en) * | 2015-08-11 | 2019-11-12 | Genesis Robotics & Motion Technologies Canada, Ulc | Electric machine |
DE102017105977A1 (en) * | 2017-03-21 | 2018-09-27 | Schaeffler Technologies AG & Co. KG | Dynamoelectric machine with reduced cogging torque |
DE102018102754A1 (en) * | 2018-02-07 | 2019-08-08 | IPGATE Capital Holding AG | Internal stator for a rotating field machine (electric motor) with external rotor, with stator tooth groups, which each have two mutually adjacent stator teeth |
DE102018102740A1 (en) * | 2018-02-07 | 2019-08-08 | Lsp Innovative Automotive Systems Gmbh | External stator for a rotary field machine (electric motor) with an inner rotor, with Statorzahngruppen, each having two mutually adjacent stator teeth |
US11156925B2 (en) | 2018-03-09 | 2021-10-26 | Asml Netherlands B.V. | Positioning system for a lithographic apparatus |
CN108494118A (en) * | 2018-04-19 | 2018-09-04 | 李亚兵 | Energy-saving generator and dynamical system |
CN112421875B (en) * | 2019-08-23 | 2022-05-24 | 广东美的环境电器制造有限公司 | Air supply device and household appliance |
CN112421877B (en) * | 2019-08-23 | 2022-05-31 | 广东美的环境电器制造有限公司 | Air supply device and household appliance |
WO2021092118A1 (en) * | 2019-11-07 | 2021-05-14 | Hyperloop Technologies, Inc. | Force-producing electromagnetic actuator |
CN113258694A (en) * | 2021-06-29 | 2021-08-13 | 瓷金科技(河南)有限公司 | Single-phase alternating current permanent magnet synchronous motor |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
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US3007068A (en) * | 1958-10-20 | 1961-10-31 | Emerson Electric Mfg Co | Shaded pole motor |
JPS58186343A (en) | 1982-04-26 | 1983-10-31 | Matsushita Electric Works Ltd | Stator for motor |
EP0129049B1 (en) | 1983-05-20 | 1988-07-27 | Alcatel N.V. | Electronically commutated d.c. motor |
US4583015A (en) * | 1983-08-20 | 1986-04-15 | Pioneer Electronic Corporation | Single-phase brushless motor with multisector stator armature poles having different cross-sections |
CA1323650C (en) * | 1985-11-12 | 1993-10-26 | Franklin Lee Forbes | Electrically commutated motor having an edgewise wound yoke |
US4786834A (en) | 1987-07-06 | 1988-11-22 | Rem Technologies, Inc. | Stator assembly for dynamoelectric machine |
US4864176A (en) | 1988-07-29 | 1989-09-05 | Rem Technologies, Inc. | Stator support structure with stamped end plates |
IT1261598B (en) | 1993-09-30 | 1996-05-23 | Gate Spa | PERMANENT MAGNET ELECTRIC MOTOR WITH REDUCED RELUCTANCE TORQUE |
JPH1032967A (en) * | 1996-07-15 | 1998-02-03 | Tsujikawa Keiko | Torque developing device |
JP2000166131A (en) | 1998-12-02 | 2000-06-16 | Yoho Han | Motor or stator for generator |
US6384496B1 (en) * | 1999-05-17 | 2002-05-07 | Wavecrest Laboratories, Llc | Multiple magnetic path electric motor |
DE19924038A1 (en) | 1999-05-26 | 2000-11-30 | Joern H Schaefertoens | Synchronous electrical machine has flux guide wound with individual windings before assembly |
KR20010057863A (en) | 1999-12-23 | 2001-07-05 | 이형도 | A brushless motor of single phase |
US6492756B1 (en) * | 2000-04-05 | 2002-12-10 | Wavecrest Laboratories, Llc | Rotary electric motor having magnetically isolated stator and rotor groups |
US6584813B2 (en) * | 2001-03-26 | 2003-07-01 | Emerson Electric Co. | Washing machine including a segmented stator switched reluctance motor |
US6617746B1 (en) * | 2001-10-01 | 2003-09-09 | Wavecrest Laboratories, Llc | Rotary electric motor having axially aligned stator poles and/or rotor poles |
-
2002
- 2002-07-31 US US10/207,847 patent/US6822368B2/en not_active Expired - Fee Related
-
2003
- 2003-03-28 WO PCT/US2003/008672 patent/WO2003105317A1/en active Application Filing
- 2003-03-28 AT AT03719435T patent/ATE424057T1/en active
- 2003-03-28 CA CA002483625A patent/CA2483625C/en not_active Expired - Fee Related
- 2003-03-28 BR BR0311549-6A patent/BR0311549A/en not_active IP Right Cessation
- 2003-03-28 JP JP2004512269A patent/JP2005528878A/en active Pending
- 2003-03-28 ES ES03719435T patent/ES2322450T3/en not_active Expired - Lifetime
- 2003-03-28 EP EP03719435A patent/EP1509988B1/en not_active Expired - Lifetime
- 2003-03-28 PT PT03719435T patent/PT1509988E/en unknown
- 2003-03-28 AU AU2003223319A patent/AU2003223319A1/en not_active Abandoned
- 2003-03-28 DE DE60326342T patent/DE60326342D1/en not_active Expired - Lifetime
- 2003-03-28 CN CN03812800A patent/CN100583602C/en not_active Expired - Fee Related
- 2003-03-28 DK DK03719435T patent/DK1509988T3/en active
- 2003-03-28 MX MXPA04012138A patent/MXPA04012138A/en active IP Right Grant
- 2003-03-28 KR KR10-2004-7019748A patent/KR20050004289A/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
CA2483625C (en) | 2006-12-05 |
EP1509988A1 (en) | 2005-03-02 |
US20040021395A1 (en) | 2004-02-05 |
JP2005528878A (en) | 2005-09-22 |
AU2003223319A1 (en) | 2003-12-22 |
ES2322450T3 (en) | 2009-06-22 |
DK1509988T3 (en) | 2009-05-25 |
ATE424057T1 (en) | 2009-03-15 |
CN100583602C (en) | 2010-01-20 |
DE60326342D1 (en) | 2009-04-09 |
CN1659765A (en) | 2005-08-24 |
EP1509988B1 (en) | 2009-02-25 |
US6822368B2 (en) | 2004-11-23 |
MXPA04012138A (en) | 2005-04-19 |
WO2003105317A1 (en) | 2003-12-18 |
KR20050004289A (en) | 2005-01-12 |
BR0311549A (en) | 2005-05-10 |
CA2483625A1 (en) | 2003-12-18 |
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